[Crtcalmss]

Our team struggled with the decision about ramp size as well. We "fondly" remember flipping backward off last years ramps. We remember so many others doing the same. A 12" ramp, unless mated with a sufficiently long ramp so that a robot 1) does not have the tendency to flip backward 2) does not become high-centered on the transition from ramp up to flat top.

In the end, we settled on a 4" high platform with an extendable ramp that has about a 20 degree slope. Most 'bots, except for those with really low clearance, should be able to climb us. We will be extending twin side-by-side ramps so we can provide a platform for two partners.

There are other additions to our design, but they're not important to this thread. Good luck with your design.